论文标题
巨型无线电类星体：样本和基本属性
Giant radio quasars: sample and basic properties
论文作者
论文摘要
我们介绍了最大的巨型无线电类星体（GRQ）样本，该样品的线性大小大于0.7 MPC。该样本由272个GRQ组成，其中174个是通过交叉匹配的NRAO VLA SKY SUMPER（NVSS）和SLOAN数字天空调查发现的新对象，14 $^{\ rm th} $数据释放Quasar catalog（DR14Q），并使用TWT TWT TWT TWET TWET TWIES SKY在Twipt Twice Sky的图像确认了Twipecentimetimetimetimetimeterseremetersemeter（FirstimeTimeters）的图像。 In our analysis we compare the GRQs with 367 smaller, lobe-dominated radio quasars found using our search method, as well as with quasars from the SDSS DR14 Quasar Catalogue, investigating the parameters characterizing their radio emission (i.e. total and core radio luminosity, radio core prominence), optical properties (black hole masses, accretion rates, distribution in Eigenvector 1 plane) and infrared colours.对于GRQ和较小的无线电类星体，我们发现[OIII]的光度和1.4 GHz的无线电发光度之间存在很强的相关性，这表明狭窄线区域的无线电发射与条件之间存在牢固的联系。我们发现GRQ和较小的无线电数量之间没有显着差异，但是我们表明，大多数扩展的无线电类星体属于具有大的黑洞质量和低积聚率的进化AGN的类星体种群。我们还表明，与具有首次检测的SDSS类星体相比，GRQ具有蓝色的W2-W3颜色，表明尘土飞扬的圆环结构差异。
We present the largest sample of giant radio quasars (GRQs), which are defined as having a projected linear size greater than 0.7 Mpc. The sample consists of 272 GRQs, of which 174 are new objects discovered through cross-matching the NRAO VLA Sky Survey (NVSS) and the Sloan Digital Sky Survey 14$^{\rm th}$ Data Release Quasar Catalogue (DR14Q) and confirmed using Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) radio maps. In our analysis we compare the GRQs with 367 smaller, lobe-dominated radio quasars found using our search method, as well as with quasars from the SDSS DR14 Quasar Catalogue, investigating the parameters characterizing their radio emission (i.e. total and core radio luminosity, radio core prominence), optical properties (black hole masses, accretion rates, distribution in Eigenvector 1 plane) and infrared colours. For the GRQs and smaller radio quasars we find a strong correlation between [OIII] luminosity and radio luminosity at 1.4 GHz, indicating a strong connection between radio emission and conditions in the narrow-line region. We spot no significant differences between GRQs and smaller radio quasars, however we show that most extended radio quasars belong to a quasar population of evolved AGNs with large black hole masses and low accretion rates. We also show that GRQs have bluer W2-W3 colours compared to SDSS quasars with FIRST detections, indicating differences in the structure of the dusty torus.
